---
id: specified-by
title: specifiedBy
---

Exposes a URL that specifies the behavior of this scalar.

```graphql
directive @specifiedBy(url: String!) on SCALAR
```

### Arguments

#### [`specifiedBy.url`](#url) · [`String!`](/docs/developers/api-reference/booking/v1/types/scalars/string) **non-null** **scalar** {#url}

The URL that specifies the behavior of this scalar.